Floating lantern



FIG. 1 is a left side elevational view of a floating lantern embodying our new design, the right side elevational view being a mirror image thereof;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front end view thereof; and

FIG. 5 is a rear end view thereof. 

The ornamental design for a floating lantern, substantially shown and described. 